The =operator for the DataBlock class was incorrectly interpreting the class
member m_alloc. This variable stands for whether the assigned memory for the
data block needs to be freed or not by the class itself. It seems that the
=operator interpreted the variable as whether the memory is assigned to the
data block. This wrong interpretation was causing values not to propagate
to RubySystem::m_mem_vec_ptr. This caused major issues with restoring from
checkpoints when using a protocol which verified that the cache data was
consistent with the backing store (i.e. MOESI-hammer).
DataBlock &
DataBlock::operator=(const DataBlock & obj)
{
- if (this == &obj) {
- // assert(false);
- } else {
- if (!m_alloc)
- m_data = new uint8[RubySystem::getBlockSizeBytes()];
- memcpy(m_data, obj.m_data, RubySystem::getBlockSizeBytes());
- m_alloc = true;
- }
-
+ memcpy(m_data, obj.m_data, RubySystem::getBlockSizeBytes());
return *this;
}
#ifndef __MEM_RUBY_COMMON_DATABLOCK_HH__
#define __MEM_RUBY_COMMON_DATABLOCK_HH__
+#include <cassert>
#include <iomanip>
#include <iostream>
inline void
DataBlock::assign(uint8* data)
{
+ assert(data != NULL);
if (m_alloc) {
delete [] m_data;
}